A TCP client can perform a TLS handshake and present the server name extension with a server name that is accepted by a server wildcard name, e.g

A TCP client can perform a TLS handshake and present the server name extension with a server name that is accepted by a server wildcard name, e.g. if the server is configured with a certificate accepting *.example.com, any XYZ.example.com where xyz is a valid name can be used.